The act of masturbating on a live webcam feed. Such places this is done are; Chatroulette, Omegle, Stickam and Tinychat.
This can also be done in private on such computer applications as Skype, Windows Live Messenger, AIM, Yahoo! Messenger and Oovoo.

Dude, I went on chatroulette last night and saw way too many guys and not enough girls camsturbating... Camsturbation is becoming a big problem with guys on there...